Because the Remove method returns a value that indicates its success, it is not required to look for a key before trying to remove the key/value pair from the SqlConnectionStringBuilder instance. Because the SqlConnectionStringBuilder maintains a fixed-size collection of key/value pairs, calling the Remove method simply resets the value of the key/value pair back to its default value.

Because the collection of keys supported by the SqlConnectionStringBuilder is fixed, every item within the collection has a known default value. The following table lists the keys, and the value for each when the SqlConnectionStringBuilder is first initialized, or after the Remove method has been called.

The following example converts an existing connection string from using Windows Authentication to using integrated security. The example works by removing the user name and password from the connection string, and then setting the IntegratedSecurity property of the SqlConnectionStringBuilder object.

Note

This example includes a password to demonstrate how SqlConnectionStringBuilder works with connection strings. In your applications, we recommend that you use Windows Authentication. If you must use a password, do not include a hard-coded password in your application.